DK427588D0 - Digital signalkodning - Google Patents
Digital signalkodningInfo
- Publication number
- DK427588D0 DK427588D0 DK427588A DK427588A DK427588D0 DK 427588 D0 DK427588 D0 DK 427588D0 DK 427588 A DK427588 A DK 427588A DK 427588 A DK427588 A DK 427588A DK 427588 D0 DK427588 D0 DK 427588D0
- Authority
- DK
- Denmark
- Prior art keywords
- state
- pct
- date
- input
- sequence
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
- H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
- H04L27/3438—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying generalised cross constellation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Error Detection And Correction (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Analogue/Digital Conversion (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868628655A GB8628655D0 (en) | 1986-12-01 | 1986-12-01 | Data coding |
PCT/GB1987/000861 WO1988004500A1 (en) | 1986-12-01 | 1987-12-01 | Digital signal coding |
Publications (1)
Publication Number | Publication Date |
---|---|
DK427588D0 true DK427588D0 (da) | 1988-07-29 |
Family
ID=10608232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK427588A DK427588D0 (da) | 1986-12-01 | 1988-07-29 | Digital signalkodning |
Country Status (11)
Country | Link |
---|---|
US (1) | US5054036A (da) |
EP (1) | EP0334868B1 (da) |
JP (1) | JP2799719B2 (da) |
AT (1) | ATE78964T1 (da) |
AU (1) | AU591823B2 (da) |
DE (1) | DE3780831T2 (da) |
DK (1) | DK427588D0 (da) |
GB (1) | GB8628655D0 (da) |
HK (1) | HK125896A (da) |
NO (1) | NO883389D0 (da) |
WO (1) | WO1988004500A1 (da) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU630417B2 (en) * | 1989-02-16 | 1992-10-29 | Codex Corporation | Trellis shaping for modulation systems |
US5150381A (en) * | 1989-02-16 | 1992-09-22 | Codex Corporation | Trellis shaping for modulation systems |
JPH0329434A (ja) * | 1989-06-26 | 1991-02-07 | Nec Corp | フレーム同期外れ検出方式 |
EP0587620B1 (en) * | 1991-06-03 | 1998-01-07 | BRITISH TELECOMMUNICATIONS public limited company | Radio system |
US5233629A (en) * | 1991-07-26 | 1993-08-03 | General Instrument Corporation | Method and apparatus for communicating digital data using trellis coded qam |
JP2845705B2 (ja) * | 1993-01-14 | 1999-01-13 | 日本電気株式会社 | 多レベル符号化変調通信装置 |
US5995539A (en) * | 1993-03-17 | 1999-11-30 | Miller; William J. | Method and apparatus for signal transmission and reception |
US5396518A (en) * | 1993-05-05 | 1995-03-07 | Gi Corporation | Apparatus and method for communicating digital data using trellis coding with punctured convolutional codes |
JPH07245635A (ja) * | 1994-03-04 | 1995-09-19 | Sony Corp | 信号点マッピング方法および信号点検出方法 |
US5754600A (en) * | 1994-08-29 | 1998-05-19 | Motorola, Inc. | Method and apparatus for optimum soft-decision viterbi decoding of convolutional-differential encoded QPSK data in coherent detection |
US5675590A (en) | 1994-11-23 | 1997-10-07 | At&T Wireless Services, Inc. | Cyclic trellis coded modulation |
US6889356B1 (en) | 1994-11-23 | 2005-05-03 | Cingular Wireless Ii, Llc | Cyclic trellis coded modulation |
FR2756996A1 (fr) * | 1996-12-10 | 1998-06-12 | Philips Electronics Nv | Systeme et procede de transmission numerique comportant un code produit combine a une modulation multidimensionnelle |
CN1418421A (zh) * | 2001-01-16 | 2003-05-14 | 皇家菲利浦电子有限公司 | 比特交织的编码调制映射 |
US7733968B2 (en) * | 2005-09-27 | 2010-06-08 | Qualcomm Incorporated | Evaluation of transmitter performance |
US20070070877A1 (en) * | 2005-09-27 | 2007-03-29 | Thomas Sun | Modulation type determination for evaluation of transmitter performance |
US20070127358A1 (en) * | 2005-11-23 | 2007-06-07 | Qualcomm Incorporated | Phase correction in a test receiver |
US7734303B2 (en) * | 2006-04-12 | 2010-06-08 | Qualcomm Incorporated | Pilot modulation error ratio for evaluation of transmitter performance |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH609510A5 (da) * | 1976-06-18 | 1979-02-28 | Ibm | |
US4520490A (en) * | 1983-08-05 | 1985-05-28 | At&T Information Systems Inc. | Differentially nonlinear convolutional channel coding with expanded set of signalling alphabets |
US4601044A (en) * | 1983-11-04 | 1986-07-15 | Racal Data Communications Inc. | Carrier-phase adjustment using absolute phase detector |
-
1986
- 1986-12-01 GB GB868628655A patent/GB8628655D0/en active Pending
-
1987
- 1987-12-01 JP JP63500080A patent/JP2799719B2/ja not_active Expired - Lifetime
- 1987-12-01 US US07/368,357 patent/US5054036A/en not_active Expired - Fee Related
- 1987-12-01 DE DE8787907794T patent/DE3780831T2/de not_active Expired - Fee Related
- 1987-12-01 EP EP87907794A patent/EP0334868B1/en not_active Expired
- 1987-12-01 WO PCT/GB1987/000861 patent/WO1988004500A1/en active IP Right Grant
- 1987-12-01 AT AT87907794T patent/ATE78964T1/de not_active IP Right Cessation
- 1987-12-01 AU AU82774/87A patent/AU591823B2/en not_active Ceased
-
1988
- 1988-07-29 NO NO883389A patent/NO883389D0/no unknown
- 1988-07-29 DK DK427588A patent/DK427588D0/da not_active Application Discontinuation
-
1996
- 1996-07-11 HK HK125896A patent/HK125896A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO883389D0 (no) | 1988-07-29 |
WO1988004500A1 (en) | 1988-06-16 |
JP2799719B2 (ja) | 1998-09-21 |
ATE78964T1 (de) | 1992-08-15 |
HK125896A (en) | 1996-07-19 |
DE3780831T2 (de) | 1993-02-25 |
GB8628655D0 (en) | 1987-01-07 |
DE3780831D1 (de) | 1992-09-03 |
EP0334868B1 (en) | 1992-07-29 |
JPH02501021A (ja) | 1990-04-05 |
AU8277487A (en) | 1988-06-30 |
EP0334868A1 (en) | 1989-10-04 |
AU591823B2 (en) | 1989-12-14 |
US5054036A (en) | 1991-10-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ATS | Application withdrawn |